Grow Pro Bubble Ice Bags Essential Oil Herbal Hash Essence Extractor Kit - 25-73-120-160-220 Microns Bag Free Pressing Screen, 5 Piece Bag color - filtration: purple - 25 microns, yellow - 73 microns, orange - 120 microns, red - 160 microns, blue - 220 microns 800 Thread count nylon for the 5, 20 and 32 gallon bags 400 Thread count for the 1 gallon bags 100% Waterproof nylon sidewalls Includes drawstring storage bag and pressing screen